Image Compressor
Compress image online free — shrink JPG, PNG, WebP, and GIF files in your browser. Reduce image size, resize, and strip EXIF without uploading anywhere.
Drop images here, or click to browse
JPG · PNG · WebP · GIF · Any size
Release to add files
Low keeps best quality. High produces the smallest file.
Processing…
What is an image compressor?
An image compressor is a tool that reduces the file size of a photo or graphic while keeping it visually close to the original. This free image compressor runs entirely in your browser, so you can compress image online without uploading anything to a server. It is built for fast image optimization across the formats people actually use day-to-day — JPG, PNG, WebP, and GIF — and works as both a photo compressor for camera shots and a digital image optimizer for screenshots, web graphics, and product photos.
Compression is the difference between an image that takes seven seconds to load and one that appears instantly. For websites, smaller images mean better Core Web Vitals scores and better SEO. For everyday use, smaller files mean photos you can actually email, post, or share without hitting an attachment limit.
How image compression works
There are two flavors of compression. Lossy compression — used by JPG and WebP — discards visual information the human eye barely notices, like fine color gradations. Lossless compression — used by PNG — rewrites the same pixels using more efficient encoding, so the output looks identical to the input. A modern image optimizer combines both: re-encoding the bytes, optionally resizing the dimensions, and stripping metadata (EXIF, color profiles, thumbnails) the file does not need.
Compress JPG, PNG, and WebP online
Every format compresses differently. Picking the right one — and the right quality level — is the single biggest lever you have for shrinking image size without losing quality.
Compress JPG images
JPG is the format of choice for photographs. A JPG compressor works by lowering the quality factor and using chroma subsampling — the eye is far more sensitive to brightness than to color, so the encoder spends fewer bits on color. On Medium, a typical 4 MB phone photo drops to under 500 KB with no visible difference. JPG does not support transparency, so transparent PNGs converted to JPG get a white background.
Compress PNG images
PNG is best for screenshots, logos, and any graphic that needs sharp edges or transparency. A PNG compressor can run truly lossless (rewriting the DEFLATE stream) or lossy (quantizing the palette down to 256 colors). For UI screenshots, palette quantization typically cuts file size by 60–80% with no perceivable loss. If your PNG is really a photo, converting it to JPG or WebP will shrink it much further.
Compress WebP images
WebP is the modern web format — at the same visual quality, a WebP compressor produces files roughly 25–35% smaller than JPG and 50%+ smaller than PNG. It supports both lossy and lossless modes, plus transparency and animation. Every current browser supports it. If you are optimizing images for a website, WebP is almost always the right output format.
Reduce image size without losing quality
The trick to compress images without losing quality is to combine three small changes instead of making one big one. First, re-encode at a quality level just below perceptually-lossless (typically 75–85). Second, resize down to the dimensions you will actually display — a 4000×3000 photo posted on social media is wasted bytes. Third, strip EXIF, ICC profiles, and embedded thumbnails. Each step alone cuts only modestly; together they often shrink image size by 80% or more while still looking sharp.
Why use our image compressor?
- Faster website loading. Smaller images mean faster Largest Contentful Paint and a snappier feel on mobile.
- Better SEO. Page weight is a ranking signal — compressed images directly improve Core Web Vitals.
- Reduced storage usage. Free up phone, cloud, or disk space without deleting memories.
- Easier sharing. Slip under upload limits on social platforms, forums, and CMSes.
- Smaller email attachments. Avoid the dreaded “file too large” bounce.
- No software to install. A browser tab is the entire image compressor online — no app, no account.
Privacy & security
This is a secure image compressor: your files are processed locally in your browser and never uploaded to a server. There is no API call, no temporary storage, no analytics collecting your photos. If you need to compress image without upload — for client work, medical scans, ID documents, or anything sensitive — open this page once, then disconnect from the internet and it still works. That is what browser image compressor means in practice.
Supported formats
The compressor accepts JPG, JPEG, PNG, WebP, and GIF (first frame). You can keep the source format or convert during compression — useful for switching a heavy PNG to a much lighter WebP, or normalizing mixed batches to JPG. iPhone HEIC photos are not handled here; convert them with the HEIC to JPG tool first, then drop them into the compressor.
How to compress an image
- 1
Add your images
Drag and drop JPG, PNG, WebP, or GIF files onto the drop zone — or click to browse. Add as many as you need.
- 2
Choose level and options
Pick Low, Medium, or High compression. Optionally resize, change output format, or strip EXIF (GPS, camera info).
- 3
Compress and download
Click Compress. Each image is shrunk in your browser — files never leave your device. Download individually or as a ZIP.
Image Compressor — frequently asked questions
Which image formats can I compress?
JPG, PNG, WebP, and GIF (first frame only). SVG is vector-based and cannot be compressed this way — export it to PNG first if you need to shrink it.
Will compression make my images blurry?
On the Medium setting, the quality loss is not visible to most people. High compression reduces quality more noticeably — use it for thumbnails or previews, not for print.
Does it remove EXIF data like GPS location?
Yes, when the "Strip EXIF" checkbox is on (which is the default). Stripping EXIF is recommended for privacy when sharing photos online — it removes GPS coordinates, camera serial, and timestamp.
Can I convert PNG to JPG while compressing?
Yes. Select "JPG" in the Output format dropdown. Note: transparent areas in your PNG will become white because JPG does not support transparency.
Is there a limit on how many images I can compress?
No limit. Add as many images as you need and download them all individually or as a single ZIP. Everything is processed in your browser.
Is this image compressor really free?
Yes — completely free, with no sign-up, no watermarks, and no file-count limits. There is no paid tier; every feature, including batch ZIP download and EXIF stripping, is available to everyone.
How do I compress an image without losing quality?
Use the Medium preset and avoid resizing if you need the original dimensions. Medium re-encodes at a quality level where the difference is imperceptible to the human eye while still cutting file size by 40–70% for most photos.
Are my images uploaded to a server?
No. This is a 100% browser-based image compressor — your files never leave your device. Compression happens locally using JavaScript, which makes it a secure choice for sensitive photos, screenshots, or client work.
How do I compress an image for WhatsApp without losing quality?
WhatsApp compresses photos automatically when you send them as images, causing a double quality loss if your file was already compressed aggressively. For the best result: use the Medium preset here (it targets a quality level WhatsApp will not noticeably degrade further), resize to around 1600 pixels on the long edge, and send the file as a Document inside WhatsApp instead of a photo — sending as a document bypasses WhatsApp's own compression entirely, delivering your image at the quality you chose here.
What is the best image size for a website to improve page speed?
For full-width hero images, 1920×1080 px at Medium compression (WebP output) is the current standard — it covers retina displays at 960 px wide without overshooting. For blog inline images, 1200 px wide is enough. For thumbnails or card images, 600 px wide is generous. As a general rule, never serve an image wider than the largest display size it will appear at. Switching output format from JPG to WebP here typically saves an additional 25–35% on top of the quality compression alone, which directly improves Largest Contentful Paint (LCP).
How do I compress a PNG with a transparent background?
Select PNG as the output format — transparency is preserved through compression. Setting Medium or High compression on a PNG applies palette quantization, which reduces the number of colours in the image (from 16 million to 256) while keeping transparency intact. This typically cuts PNG file size by 50–70% with no visible difference for logos, icons, or UI graphics. Do not select JPG output for transparent images — JPG does not support transparency and will fill the background with white.
How do I reduce image size for Instagram or Facebook upload?
Both Instagram and Facebook re-compress images after you upload them, so upload at the correct display size rather than at 4K. For Instagram posts, 1080×1080 px (square) or 1080×1350 px (portrait) is ideal. For Facebook posts, 1200×630 px. Use Medium compression and WebP or JPG output. Avoid pre-compressing too aggressively — if your upload is already at low quality and the platform compresses it again, the result will be noticeably degraded. Medium on this tool is calibrated to survive one more round of platform compression without visible artefacts.
Can I compress images in bulk and download them all at once?
Yes. Drop any number of files onto the tool at once — JPG, PNG, WebP, and GIF files can be mixed in a single batch. All images are compressed in parallel in your browser. Download each file individually using its own Download button, or click Download All (ZIP) at the bottom to receive every compressed image in a single archive. The ZIP download is especially useful when compressing an entire website's image folder or preparing a batch of product photos.